JP5249692B2 - Agricultural work machine equipped with powder and granular material supply device - Google Patents

Description

  The present invention includes a fertilizer application device for supplying fertilizers and chemicals to appropriate places such as farms and a powder supply device such as a seeding device for direct seeding, and a link to the rear part of the traveling aircraft. A flexible tube that is configured to be extendable and retractable mainly near the connecting portion of the powder supply unit, which relates to a farming machine equipped with a planting-type paddy field working device that performs sowing and planting so that it can be moved up and down through a mechanism. Regarding improvements.

As a fertilized rice planter equipped with a fertilizer application device as a powder supply device at the rear part of the traveling machine body, a seedling planting device 4 as a paddy field work device is provided at the rear part of the traveling machine body 1 via the link mechanism 3 so as to be movable up and down. There is known one provided with a fertilizer application device 5 at the rear portion of the traveling machine body 1 located between the driver's seat 13 and the seedling planting device 4 (see Patent Document 1).
The fertilizer fed from the feeding device 20 of the fertilizer applying device 5 is supplied to the rice field through the fertilizer hose 23 by the wind of the blower. In a normal planting posture in which the working height of the seedling planting device 4 is relatively low, the fertilizer hose 23 is drawn in a gentle downward line close to a straight line, so that fertilizer is conveyed well with weak wind power. In the case of Fukada, since the wheel sinks deeply from the paddy field, the height of the seedling planting device 4 with respect to the machine body becomes higher than that in the normal planting posture, whereby the fertilizer hose 23 bends in a curved state. When the fertilizer hose 23 is lifted higher than the connecting portion of the feeding device 20 and is bent, resistance to fertilizer conveyance becomes great, and the capacity of the blower must be determined based on this, and a large and large blower is required. It becomes.

  For example, regardless of Asada or Fukada, as means for eliminating the bending of the fertilizer hose, for example, as shown in FIG. 17, a fertilizer hopper 20, a fertilizer feed unit 21, and a fertilizer hose are provided on the back of the seedling platform 44 of the seedling planting device 4. A fertilizer application device 2 provided with 48 is conceivable. This eliminates the need for a blower, but the area around the driver's seat 16 is also clean. However, if the fertilizer application device 2 is fixed to the back surface of the seedling platform 44, the entire seedling planting device becomes heavy.

  Therefore, Patent Document 2 shows that the fertilizer device 5 is provided at the rear part of the traveling machine body so that the fertilizer hose 32 can be expanded and contracted so that the fertilizer hose 32 does not bend even in seedling planting work in Fukada. A fertilizer transplanter is known. In this device, the fertilizer hose 32 for supplying the fertilizer fed from the feeding portion 31 of the fertilizer application device 5 to the rice field is formed of a flexible hose and connected to the hose attachment portion 36a. -The sleeve 32a is slidably fitted inside the fertilizer-side hose 32b, and the fitting portion is covered with a rubber bellows 32c, and both ends of the bellows 32c are respectively fed-side hose 32a and fertilizer-side hose. -It is attached to the screw 32b by fastening with stoppers 32d, 32d. As a result, the fertilizer hose 32 does not bend even if fertilization is performed while performing seedling planting work in a slightly elevated posture in Fukada than when the seedling planting device 4 is at a normal planting posture height. It can be expanded and contracted to absorb changes in the required hose length that accompany changes in the height of the seedling planting posture.

In the fertilization hose 32, the fertilization hose 32b is a hard guide hose, and the feeding hose 32a is a soft hose that is easy to bend, so that the fertilization hose can be easily expanded and contracted. When working with the height of the machine body increased, the fertilizer hose 32 does not bend upward, and can be kept in a straight line by contracting, so that the fertilizer can be smoothly conveyed and the blower Capacity can be reduced.
JP-A-2005-204541 JP-A-5-161410

  Since the fertilization work can be performed in a state in which the fertilization hose is close to a straight line in the configuration of Patent Document 2, there is an advantage that the fertilizer can be supplied satisfactorily, but when the seedling planting device is excessively raised, the feeding portion The side hose may be too close to the feeding portion side and the hose bends, which induces resistance, and the fertilization hose is bent and pulled up strongly, and the fertilization hose may be damaged.

  The present invention can easily supply the granular material regardless of the working height of the paddy field working device, and even if the paddy field working device is raised to a high position, the granular material supply pipe may be bent flexibly, An object of the present invention is to provide a connection structure for a granular material supply pipe which is not damaged.

[Configuration of the first invention]
In order to achieve the above object, the first invention adopts the following configuration.
A first aspect of the present invention provides a paddy field work device that can be moved up and down via a link mechanism at the rear part of a traveling machine body, and a hopper that puts powder particles in the rear part of the traveling machine body located between the driver seat and the paddy field work device. And a supply unit for supplying the powder and granular material in the hopper, and a supply unit for supplying the granular material to the rice field is provided in the paddy field work device, the supply unit and the It is configured so as to supply the granular material fed from the feeding unit to the rice field via the granular material conveyance path between the supply unit and the pipe and the pipe are fitted to the granular material conveyance path. Without having a slidable double pipe
The powder and granular material conveyance path,
A transport hose connected to the supply section;
It is connected between the feeding portion and the start end portion of the transport hose, and is configured with a bellows tube biased in a shrinking direction,
In the state where the paddy field working device is at the working height position, the connection portion between the transport hose and the bellows tube is located below the feeding portion,
In a state where the paddy field working device is in a high position raised from the work height position, the connection portion between the transport hose and the bellows tube is configured to be located at substantially the same height as the feeding portion. Is.

[Operation of the first invention]
According to the first aspect of the present invention, since it is provided with a bellows tube that is biased in the shrinking direction without including a slidable double tube in which the tube and the tube are fitted to the granular material conveyance path, in Asada Even if the required length of the granular material transfer pipe changes depending on the work height position such as the work in Fukada or the work in Fukada, the change in the length can be absorbed by the bellows pipe. Since the powder transport path does not have a slidable double pipe that fits the pipe, the pipe on the feeding section side is pulled out while being lifted even if the paddy field work device is raised to a high position. When bent, it is possible to avoid being bent at the connecting portion like a double tube or being damaged by an excessive tensile force in the bent state.

[Effect of the first invention]
That is, according to the first invention, the bellows tube always acts in the direction of contraction during work regardless of the conditions such as Asada and Fukada. The granular material transport pipe is not lifted or bent significantly, and the granular material fed from the feeding portion of the granular material supply apparatus follows the descending path and is smoothly supplied to the field.
Further, even if the paddy field working device is raised to a high position, the bellows tube is always contracted or stretched according to the height of the paddy field working device with respect to the body height while acting in a contracting direction, and is not damaged.
Further, when the paddy field working device is raised from the working position of Asada to the working position of Fukada, the granular material transport pipe connected between the feeding unit on the traveling machine side and the supplying unit on the paddy field working device side becomes the feeding unit. Looseness occurs near the area.
According to 1st invention, the granular material conveyance pipe | tube which forms a granular material conveyance path | route connects a conveyance hose to the supply part provided in the paddy field working apparatus side to go up and down, and the hose start end part above this conveyance hose and Because it is configured by connecting a bellows tube biased in the shrinking direction without providing a slidable double tube between the feeding unit of the powder body supply device on the traveling machine body side, Even if the path length of the granular material transport path changes due to the change in work height, the change in length can be effectively absorbed by the bellows tube connected to the feeding section, and the paddy field work device has a high When moving up to the position, even if the powder transport path near the feeding part of the powder supply device is lifted from the descending path, the bellows pipe only expands and contracts, and the powder transport of the bellows pipe and transport hose The tube is broken like a conventional slidable double tube It can be avoided.
Therefore, according to the first aspect of the present invention, the bellows connected between the feeding part of the powder supply device on the traveling machine side and the transport hose on the paddy field working device that moves up and down even if the paddy field working device is raised and lowered during the work. While acting in the direction in which the pipe shrinks, the powder transport pipe will not be damaged by merely shrinking or stretching depending on the height of the paddy field work equipment.

[Configuration of the second invention]
According to a second invention, in the first invention, the bellows tube is provided with an elastic member that is separate from the bellows tube and has a biasing force for biasing the bellows tube in the direction of contraction.

[Operation and effect of the second invention]
Since the urging force for urging the bellows tube in the direction of contraction is applied by an elastic member separate from the bellows tube, the bellows tube does not need to be formed of an elastic material such as rubber, but is formed of a nonwoven fabric or a waterproof sheet. The bellows tube can be made of a wide variety of inexpensive materials, and the cost can be reduced.

[Configuration of the third invention]
In a third aspect based on the first aspect, the bellows tube has a biasing force for biasing the bellows tube in a direction in which the bellows tube is contracted .

[Operation and effect of the third invention]
Since the bellows tube itself has a biasing force that biases in the direction of contraction, the bellows tube and the elastic material that biases the bellows tube in the direction of contraction are easier to handle than separate members.
The bellows tube itself can be composed of an elastic member such as rubber having an urging force that urges in the direction of contraction from the maximum contracted state. Alternatively, the sheet-like soft resin and an elastic material such as rubber can be integrated so that the bellows tube is contracted .

[Configuration of the fourth invention]
According to a fourth aspect of the present invention, in the configuration of the second aspect , the elastic member is constituted by a coil spring.

[Effects of the fourth invention]
Since the elastic member is constituted by a coil spring, the urging force for urging the bellows tube in the direction of contraction can be set to an optimum urging force by selecting the coil spring.

[Configuration of the fifth invention]
5th invention is a structure of the invention in any one of 1st- 4th invention, without providing the slidable double pipe comprised by fitting pipes inside a bellows pipe, powder. The granular material stagnation prevention member which prevents the stagnation of the granular material is provided.

[Effects of the fifth invention]
In the case of the bellows tube alone, the powder particles may stay in the bellows tube, but by providing the powder particle stagnation prevention member inside the bellows tube, it is possible to reduce or prevent the powder particles from stagnation in the bellows tube. There are advantages that can be made.

[Configuration of the sixth invention]
According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the invention, the granular material stagnation preventing member is formed of a fine mesh tube that can be expanded and contracted.

[Effects of the sixth invention]
Since the granular material stagnation prevention member is composed of a stretchable fine mesh tube, for example, if the granular material is in a grain state such as seeds for sowing, if it is composed of a mesh smaller than the seed, Granules such as seeds can pass through the inside of the net tube without stagnation.
In addition, even if the granular material is a fertilizer or the like in which powder and solid are mixed, if the mesh passage and the outer bellows space are both in communication with the lower conveyance path, the bellows tube alone The stagnation in the bellows tube can be reduced as compared with conveying the granular material.

[Configuration of the seventh invention]
In the configuration of the seventh invention and the second invention, powder particles that prevent stagnation of the powder particles without providing a slidable double tube formed by fitting the tubes inside the bellows tube While providing a body stagnation prevention member, the granular material stagnation prevention member is formed of a rubber tube that also serves as an elastic member.

[Effects of the seventh invention ]
Since the granular material stagnation prevention member is composed of a rubber tube that also serves as an elastic member, the bellows tube itself needs to be provided with an elastic member such as rubber that urges the bellows tube in the direction of contraction. In addition, there is an advantage that the inside of the bellows tube can be passed without stagnating the powder particles.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
[Overall configuration of farm equipment]
As shown in FIG. 1, an engine 13 and a transmission case 14 are provided on the front side of a body frame 10 of a traveling machine body 1 having a pair of left and right front wheels 11 and a pair of left and right rear wheels 12 that can be steered. A maneuvering unit 15 equipped with a steering handle and the like and a driver's seat 16 are provided at the center of the machine body 1, and a fertilizer device 2, which is an example of a granular material supply device, is disposed at the rear part of the vehicle body frame 10 constituting the traveling machine body 1. Has been.
A driving unit step 17 having a substantially flat step portion is provided on both the left and right sides of the engine 13, between the control unit 15 and the driving seat 16, and on the left and right sides of the driving seat 16. On the outer side of the step 17, preliminary seedling stands 18 are disposed at the left and right positions facing the positions where the engine 13 is disposed.
A link mechanism 19 having a lift cylinder 19a is connected to the rear of the traveling machine body 1 so as to be movable up and down, and a seedling planting device 4 which is an example of a paddy field work device is attached to the link mechanism 19, and the fertilizer application device 2 A riding type rice transplanter that is an example of a farm work machine to which is applied.

[Fertilizer]
The fertilizer application device 2 includes a fertilizer hopper 20 made of a transparent resin for storing fertilizer, and four fertilizer feeding sections 21 arranged below the fertilizer hopper 20, and the fertilizer hopper 20 and the fertilizer feeding section. As shown in FIGS. 1, 2, and 3, 21 is supported at a rear portion of the traveling machine body 1 by a support frame 22 provided on the upper portion of the vehicle body frame 10 near the rear side of the driver seat 16. The fertilizer fed from the fertilizer feed unit 21 is configured to be supplied to the field from the groover 45 as a supply unit attached to the seedling planting device 4 side through the fertilizer transport path by the air volume by the wind generating means 3. Yes.

As shown in FIG. 4, the fertilizer hopper 20 has a desiccant 63 such as silica gel, which is used for preventing the powder particles such as fertilizer, from getting wet on the inner surface of the upper lid 62, and is fitted into a fitting type mounting member 64. It is crowded. As a method of attaching the desiccant 63, it may be fastened with a planar fastener (registered trademark Velcro) (not shown) or the like.

  The support frame 22 includes a pair of left and right blower support plates 22a erected on the pair of left and right main frames 10A of the vehicle body frame 10, a column 22b erected above the blower support plate 22a, and a left and right column 22b. And a horizontal frame 22c spanned on the upper end side of the blower. The rear end side of the blower support plate 22a is connected to one end side of a link mechanism 19 for mounting the seedling planting device 4 so as to be movable up and down. Yes.

As shown in FIG. 5 and FIG. 6, the fertilizer feeding unit 21 has a feeding roll 23 in which a large number of recesses 23 a for fertilizer insertion are formed on the outer periphery along the circumferential direction, below the fertilizer feeding port 20 a of the fertilizer hopper 20. And it arrange | positions rotatably above the funnel part (an example of the start end part of a fertilizer supply path | route) 24. As shown in FIG.
In addition, the code | symbol 23b in a figure is a brush which slidably contacts with the surrounding surface of the supply roll 23, and acts by grinding.

As shown in FIGS. 1, 3, and 5, the fertilizer feeding unit 21 extends rearward so as to transmit power from the mission case 14 to the seedling planting device 4, and power is transmitted laterally from the PTO shaft 57. The reciprocating motion of the linkage rod 59 due to the rotational motion of the crank shaft 58 to be taken out is converted into rotational motion by the one-way clutch 60 and transmitted from the driving shaft 55 to the feeding shaft 26 via the gear 56. It is driven by power.
As a result, as shown in FIGS. 3, 5, and 6, the fertilizer enters the recess 23 a of the feed roll 23 from the fertilizer hopper 20, and the fertilizer is fed to the funnel portion 24 by the intermittent rotation of the drive shaft 26. And the high voltage | pressure wind from the electric blower 30 of the wind raising means 3 mentioned later is supplied to the funnel part 24 via the ventilation duct apparatus 31, and a fertilizer passes along the fertilizer conveyance pipe | tube 46 with a high voltage | pressure wind, and the grooving machine 45 is supplied. The fertilizer is fed into the grooves formed on the paddy surface by the grooving device 45 and the fertilization work is performed.

  As shown in FIG. 6, a shutter 27 is arranged on the upper side of the feeding roll 23 so as to be freely inserted and removed. Although not shown in the drawings, the shutter 27 is composed of a flexible plate-like member divided into a plurality of portions in the longitudinal direction of the feed roll 23. It is comprised so that the quantity of the fertilizer with respect to the recessed part 23a can be adjusted.

  As shown in FIGS. 5 and 6, a switching plate 28 is supported in a fertilizer discharge port 25 formed on the front side of the fertilizer feed portion 21 of the fertilizer feed port 20 a of the fertilizer hopper 20 so as to be swingable around a horizontal axis. The discharge hose 29 extends downward from the lower side of the switching plate 28. During normal seedling planting work, the switching plate 28 is operated in the closed position shown by the solid line in FIG. 6, and the fertilizer from the fertilizer hopper 20 is fed to the funnel portion 24. When the normal seedling planting operation is completed, the switching plate 28 is brought into the open position with the drive of the electric blower 30 and the seedling planting device 4 (specifically, the drive of the PTO shaft 57) stopped. When operated, the fertilizer remaining in the fertilizer hopper 20 enters the discharge hose 29 and is discharged.

[Winding means]
The wind raising means 3 for conveying the fertilizer fed from the fertilizer application apparatus 2 to the seedling planting apparatus 4 side by wind force is configured as follows.
As shown in FIGS. 3 and 5 to 7, the electric blower 30 is supported by a pair of left and right blower support plates 22a, driven by an electric motor 30A, and outside air is introduced into the electric blower 30 to flow the conveying air. The air duct device 31 is provided. The air duct device 31 is connected to the intake portion 32 for introducing and supplying outside air to the electric blower 30 and the outlet pipe side of the electric blower 30, and wind generated by the electric blower 30 is supplied to each funnel portion. 24 and a pipe-shaped air supply section 33 for supplying to the air.

As shown in FIG. 7, the intake portion 32 has a proximal end connected to a laterally outward intake port 30a of the electric blower 30, and a rear portion of the muffler 9 near the lateral side of the engine 13 on the distal end side. The intake port 32a is disposed in the state where the hot air around the engine 13 and the exhaust heat of the muffler 9 are sucked.
The air supply section 33 connected to the exhaust port 30b side of the electric blower 30 is connected to the bifurcated branch connection pipe 34 whose downstream side is branched to the left and right, and the end of the branch connection pipe 34, and is arranged laterally to the vehicle body. It is composed of a laterally-directed air pipe 35 provided, and a large number of the fertilizers are sent to a plurality of fertilizer supply locations of a seedling planting device 4 as a paddy field work device, which will be described later, in a plurality of longitudinal directions of the laterally-directed air pipe 35. The branch discharge pipe portion 36 is provided.

[Paddy work equipment]
The seedling planting apparatus 4 which is an example of a paddy field working apparatus is configured as follows.
The seedling planting device 4 is configured in six-row planting, and includes three planting transmission cases 40, a rotating case 41 that is rotatably supported on the left and right sides of the planting transmission case 40, and both ends of the rotating case 41. It is constituted by a pair of planting claws 42 to be deployed, three grounding floats 43, a seedling table 44 and the like.
As shown in FIGS. 1 and 2, among the fertilizer supply paths from the fertilizer application device 2 to the seedling planting device 4, the end portion leading to the seedling planting device 4 is a seedling planting place by each seedling planting nail 42. It is arranged so as to be positioned one by one in the vicinity of the lateral side, and is connected to a plurality of groove forming units 45 attached to the grounding float 43 individually.
Specifically, the fertilizer transport pipes 46 connected to the grooving device 45 on the seedling planting device 4 side are individually connected to the numerous branch discharge pipe portions 36 of the wind generating means 3. .

[Powder conveying tube]
The fertilizer transport pipe 46, which is an example of the granular material transport pipe, includes a bellows pipe 47 and a resin transport hose 48 that is a flexible pipe. The bellows tube 47 is connected between the pipe attachment portion 37 at the tip of the branch discharge tube 36 and the supply start end portion of the transfer hose 48, and the end of the transfer hose 48 is connected to the groover 45.
The bellows tube 47 is made of rubber, and the peaks and valleys of the bellows tube are not circular in cross section, but are formed in a spiral shape. A coil spring 49 as an elastic member is embedded in the valley portion of the bellows tube 47.
The bellows tube 47 is in a state in which no external force acts on the bellows tube 47, for example, in a state where the transport path length of the fertilizer transport tube 46 is shortened in Fukada and is slackened, both sides of the adjacent valley portions are biased by the coil spring 49. It becomes a contact state and becomes like a cylindrical body having a valley portion inner surface as an inner diameter. When the conveyance path length becomes long, the bellows tube 47 extends against the urging force of the coil spring 49.
The start end portion of the bellows tube 47 is externally fitted to a tube mounting portion 37 in the vicinity of the discharge port of the branch discharge tube 36 and is fixed by a fastening bracket 38, and the end portion is externally fitted to the transport hose 48 and is fastened. It is fixed with.
In the state where the seedling planting device 4 is at the working height position, the connection portion C between the transport hose 48 and the bellows tube 47 is located below the fertilizer feeding unit 21, and the seedling planting device 4 is moved from the working height position. In the state of being in the raised high position, the connection portion C between the transport hose 48 and the bellows tube 47 is configured to be located at substantially the same height as the fertilizer feeding portion 21.

If the fertilizer transfer pipe 46 is configured as a bellows pipe that connects the bellows pipe 47 and the transfer hose 48 and is biased in the direction in which the bellows pipe 47 is contracted, the bellows pipe 47 is extended in the working position in Asada. If it is set so that the bellows tube 47 contracts in the working posture in Fukada where the seedling planting device 4 is raised from the Asada working posture, the length of the fertilizer transport pipe 46 required depending on the working height position Even if the length changes, the length change can be absorbed by the expansion and contraction of the bellows tube 47, and the granular material transport path does not include a slidable double tube fitting the tubes. Therefore, when the seedling planting device 4 is raised to the highest position, the bellows tube 47 is bent, and an excessive tensile force is not applied and is not damaged.

  In the seedling planting operation in Asada, when the seedling planting device 4 descends to the planting posture, the bellows tube 47 expands and contracts as the seedling planting device 4 rises to a predetermined intermediate height, and the seedling planting device As 4 rises to the highest rise position beyond a predetermined height, it extends again.

[Other Embodiments]

The bellows tube 47 is urged in a contracting direction by a coil spring 49 embedded in the valley, but the whole is formed as a rubber bellows tube 47 without incorporating the coil spring 49, and a seedling planting device is formed. You may comprise so that 4 may be urged | biased in the direction contracted in the whole raising / lowering range.

Energizing in the direction in which the bellows tube 47 contracts means that in the state where no external force is applied, it is not necessary for the adjacent valleys to be in close contact as in the above example, and at least during the fertilization operation What is necessary is just to be urged | biased in the direction contracted in the raising / lowering range of the seedling planting apparatus 4 between Asada and Fukada. Therefore, it is needless to say that the bellows tube 47 may be biased in the direction in which the seedling planting device 4 can be lifted and lowered in the entire lifting range, and this is also an embodiment of the present invention.

The coil spring 49 as one form as a biasing means for biasing the bellows tube 47 in the contracting direction is formed separately from the bellows tube 47, and the coil spring 49 is not embedded in the valley portion of the bellows tube 47. A coil spring 49 may be provided inside or outside the bellows tube 47.

  In this case, the bellows tube 47 can be formed of a non-woven fabric or a waterproof sheet in addition to a rubber resin, and various kinds of inexpensive materials can be used as the bellows tube 47.

As shown in FIG. 9, a granular material stagnation prevention member 50 that prevents stagnation of fertilizer may be provided inside the bellows tube 47.
The granular material stagnation prevention member 50 may be configured by a net tube formed of a cylindrical fine elastic net.

  The coil spring 49 may be provided inside the bellows tube 47 and the net tube 50 may be provided inside the coil spring 49.

As the granular material stagnation prevention member 50, a thin rubber tube may be provided inside the bellows tube 47 instead of the mesh tube 50. If a rubber tube is used as the granular material stagnation prevention member 50, it can also serve as an elastic member that urges the bellows tube 47 in a contracting direction .
This configuration is effective in avoiding the accumulation of fertilizer on the inner surface of the bellows tube 47.

  In the above example, the bellows tube 47 is provided on the upper side of the start end of the transport hose 48, but the short transport hoses 48, 48 are connected to the tube mounting portion 37 of the branch discharge pipe 36 and the groove forming device 45, A bellows tube 47 may be provided between the two transfer hoses 48. Alternatively, the whole may be connected to the fertilizer supply path between the branch discharge pipe 36 and the grooving device 45 by a telescopic bellows pipe without the conveyance hose 48 interposed.

  Although the fertilizer application apparatus 2 was illustrated as a granular material supply apparatus, it is not restricted to this, The application apparatus which sprays chemical | medical agents, such as a herbicide, those which supplied those mixtures, or seeds are directly sown. A seeding device may be used.

[Modification of Embodiment]
The following embodiment is not the content of the main part of the present invention, but can be appropriately changed in place of the above embodiment.

  FIG. 11 shows a configuration in which a heater device H is connected to the base end side of the air inlet 30a facing the vehicle body laterally outward of the electric blower 30 instead of the structure of the air intake portion of FIG. When the heater device H is provided in this way, a duct for taking in warm air can be eliminated, and a space is created. When performing work, warm air can be sent from the start, and since the heat is taken from the heater device H, the odor of exhaust gas does not occur during feeding.

FIG. 12 shows a schematic plan view of the state in which the fertilizer application apparatus 2 is divided into left and right sides from the rear position of the driver seat 16 and moved to the left and right sides of the driver seat 16.
The fertilizer application device 2 is divided into left and right at the left and right central part of the traveling machine body 1. In a state where the fertilizer application device 2 is arranged at the rear part of the driver's seat 16, when performing maintenance such as cleaning of the feeding roll of the fertilizer feeding part 21 and the discharge port, between the back 65 of the backrest of the driver's seat 16 and the feeding part. The space is narrow. The fertilizer application device 2 shown in FIG. 12 can be moved to the left and right sides of the driver seat 16 by arms 67 extended from the left and right vertical axes 66 provided in the vicinity of the driver seat 16.
Prior to moving the left and right fertilizer applicators 2 and 2 to the left and right, the connection of the connecting portion of the crankshaft 58 for driving the fertilizer feeding portion 21 and the connecting portion of the linkage rod 59 of the one-way clutch 60, etc. is released. In the state where the support frame 22 is uncoupled from the traveling machine body 1 with respect to 2 and the load of the fertilizer application device 2 is transferred to the arm 67, the left and right arms 67 are rotated forward to move the fertilizer application device 2 to the driver seat 16. The left side portion or the left and right side portions of the driver seat 16 are moved toward the front. As a result, a large space is secured between the lower portion of the fertilizer application device 2 and the operation unit step 17, and the fertilizer can be discharged to the upper surface of the operation unit step 17 to facilitate maintenance of the fertilizer application device 2. .

  In the structure shown in FIGS. 1 and 2, seedling is replenished from a position in front of the fertilizer application device 2. Instead, from the rear part of the blower support plate 22 a and the rear part of the vehicle body frame 10 as shown in FIG. 13. The scaffold 69 may be extended backward. If comprised in this way, it will be easy to supply the seedling of an auxiliary seedling.

14-16 shows the support | pillar 22b of the support frames 22 which support the fertilizer application apparatus 2, FIG. 14 is a top view, FIG. 15 is a side view, FIG. 16 shows a rear view, respectively.
The left and right struts 22b are located between the left and right fertilizer feeding portions 21 in the left and right center of the machine body, and the left and right struts 22b are disposed at positions very close to the side walls of the adjacent fertilizer feeding portions 21, respectively. . A fixing bracket 70 provided with a bolt insertion hole 71 is fixed to the upper portion of the support 22b. The bracket 70 is formed by bending a portion facing the back surface and a portion facing the flat surface by bending, so that the bracket 70 does not protrude outward in the left-right direction than the left and right columns 22b, 22b, and the bolt insertion hole 71. Is welded to the column 22b in a state of being biased so as to protrude inside the left and right columns 22b, 22b. This prevents the bracket 70 from interfering with the side wall of the fertilizer feeding portion 21 and facilitates the bolt tightening operation.

Side view of the whole agricultural machine with a powder supply device Plan view of the whole farm working machine with powder and particle feeder Rear view of powder supply device Rear view of the hopper with the top lid open Side view of powder supply device Longitudinal side view of powder feeding part and bellows tube Plan view showing arrangement structure of wind generating means Partial vertical side view of bellows tube connected to discharge tube A cross-sectional view of a bellows tube with a granular material stagnation prevention member inside Side view of the whole agricultural machine with a powder supply device The top view which shows the arrangement structure of another embodiment of the wind generating means The top view which shows another embodiment of a granular material supply apparatus Side view showing another embodiment of the rear part of the traveling machine body The top view which shows the support frame of a granular material supply apparatus Side view showing the support frame of the granular material supply device Rear view showing support frame of powder supply device Side view showing a comparative example of the powder supply device

1 traveling machine body 2 granular material supply device (fertilizer application device)
4 Paddy field work device (seed planting device)
16 Driver's seat 19 Link mechanism 20 Hopper 21 Feeding section 45 Supply section (grooving machine)
46 Powder transport pipe (fertilization transport pipe)
47 Bellows tube 48 Transport hose 49 Elastic member (coil spring)
50 Powder and particle stagnation prevention member
C connection

Claims (7)

A paddy field working device is provided at the rear of the traveling machine body via a link mechanism so as to be movable up and down, and a hopper for putting powder particles in the rear part of the traveling machine body located between the driver seat and the paddy field working apparatus, It is equipped with a powder supply device provided with a feeding unit for feeding powder particles, and is provided with a supply unit for supplying powder to the paddy field work device, between the supply unit and the supply unit. A slidable double tube that is configured to supply the granular material fed from the feeding unit to the surface via the granular material conveyance path, and in which a pipe and a tube are fitted to the granular material conveyance path. Without having
The powder and granular material conveyance path,
A transport hose connected to the supply section;
It is connected between the feeding portion and the start end portion of the transport hose, and is configured with a bellows tube biased in a shrinking direction,
In the state where the paddy field working device is at the working height position, the connection portion between the transport hose and the bellows tube is located below the feeding portion,
In a state where the paddy field working device is in a high position raised from the work height position, the connection portion between the transport hose and the bellows tube is configured to be located at substantially the same height as the feeding portion. Agricultural work machine equipped with powder and granular material supply device. The bellows tube, and the bellows tube separately, agricultural machine provided with a granular material feeding apparatus according to claim 1 Symbol mounting an elastic member is provided with a biasing force that biases the contracting said bellows tube . The bellows tube agricultural machine provided with a granular material feeding apparatus according to claim 1 Symbol placement has a biasing force which biases the contracting the bellows tube in the. Agricultural machine said elastic member is provided with a granular material feeding apparatus according to claim 2 Symbol mounting a coil spring. The granular material stagnation prevention member for preventing the stagnation of the granular material is provided inside the bellows tube without providing a slidable double tube constituted by fitting the tubes together. agricultural machine provided with a granular material feeding apparatus according to any one of 1-4. The farm work machine provided with the granular material supply device according to claim 5, wherein the granular material stagnation preventing member is constituted by a fine mesh tube that can be expanded and contracted. Inside the bellows tube, without providing a slidable double tube constituted by fitting the tubes together, a powder body stagnation prevention member for preventing stagnation of the powder body is provided, and the powder particle The farm work machine provided with the granular material supply device according to claim 2 , wherein the body stagnation preventing member is constituted by a rubber tube that also serves as the elastic member.

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